         (is (= tag ::lib/ok))
         (is (every? number? (map :d4 (latest-data dataset-id))))))
 
-
     (testing "derive to number column"
       (let [[tag res] (apply-transformation {:type :transformation
                                              :transformation

                                                                ::transformation.derive.s/newColumnType "text"
                                                                ::transformation.engine.s/onError "fail"})})]
        (is (= tag ::lib/bad-request))))


    (testing "Disallow anonymous functions"
      (let [[tag _] (apply-transformation {:type :transformation

                                                                  ::transformation.engine.s/onError "fail"})})]
        (is (= tag ::lib/ok))
        (is (every? number? (map :d5 (latest-data dataset-id))))))
  
    (testing "Valid type check"
      (let [[tag _ status] (apply-transformation {:type :transformation
                                                  :transformation
